20526493025 has 12 divisors (see below), whose sum is σ = 25456261692. Its totient is φ = 16418994240.

The previous prime is 20526493019. The next prime is 20526493027. The reversal of 20526493025 is 52039462502.

It can be written as a sum of positive squares in 6 ways, for example, as 2439470881 + 18087022144 = 49391^2 + 134488^2 .

It is not a de Polignac number, because 20526493025 - 2⁸ = 20526492769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20526493025.

It is not an unprimeable number, because it can be changed into a prime (20526493027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150347 + ... + 252303.

It is an arithmetic number, because the mean of its divisors is an integer number (2121355141).

Almost surely, 2^20526493025 is an apocalyptic number.

20526493025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20526493025 is a deficient number, since it is larger than the sum of its proper divisors (4929768667).

20526493025 is a wasteful number, since it uses less digits than its factorization.

20526493025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110020 (or 110015 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 20526493025 in words is "twenty billion, five hundred twenty-six million, four hundred ninety-three thousand, twenty-five".